Gas-furnace.



PATENTED DEC. 4. 1906.

Bv. F. JACKSON. GAS FURNAGE. APPLICATION FILED MAR.16.1-9oa.

. UN 1TH STATES 'PATENT FFIOE,

BENJAMIN F. JACKSON, OF BOSTON, BIASSAOHUSETTS, ASSIGNOR, BY

.MESNE ASSIl'NMENTS, '.lO FRANK A. HAVES. OF BOSTON, MASSA- Clil USETTS.

GAS-FURNACE.

Specification of Letters Patent. Application filed March 16,1906. Serial No. 306.326.

Patented Dec. 4, 1906.

To (1n/Z .11171107111 it m/rty/ concern:

Be it known that 1, BENJAMIN F. JACKSON, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and /useful lm rovements in Gas-Furnaces, and I hereby eclare that` the following is a full, clear, and exact description of the same,

reference being had to t 1e accompanying drawings, forming part of this specification.

This invention has reference to improve ments in hydrocarbon-gas furnaces which lare particularly designed to heat material supported in a suitable utensil.

One object of the invention is to so construct the furnace-burner' that combustion of the gases shall take place adjacent to the convex bottom of the utensil sustained above the burner.

Another object'of the invention .is to so construct a burner Vof this nature in which hydrocarbon gas is designed to be burned that a large supply of air may be dcliveredto the products of combustion to be largely consumed therewith.

Another object of the invention is to so construct a hydroearboneburner for furnaces that air may be supplied to the products of combustion.

Other objects of the invention will hereinafter be more fully disclosed.

The invention consists in such novel features of construction and combination of parts as shall hereinafter be more fully described, and pointed o ut in the claim.

Figure 1 represents a vertical sectional view of the improved furnace. Fig. 2 represent-s a partial plan view of the burner.

Similar characters of reference designate corresponding parts in both figures.

As shown in the drawings, mits preferred form 5 indicates a casing of any usual construction and preferably having the air-out lets 6 6 near the top 7, Whichis preferably supplied with an opening in which a utensil of any well-known shape and structure, of which a indicates thebottom, may be suse tained.

Within `the casing 5, and referably axially disposed with relation tg tile opening in the top .7, is the pedestal 8, having the socket'Q, furnished with the spring 10. Slidably mounted in the socket 9 is the tubular member 11, having the shoulder 12, bearing on the spring 10, the inlet-openings 13 13, and

the open upper end 14, which is secured to or forms part of the burner-casing 15. This buiner'casing has the gas-chamber 1G and the air-chamber 17, the outer wall 1S of which has the serrated upper edge .19. The upper .wall 20 of the air-chamber 17 is formed as a concavity in which this Wall is preferably given the shape of a series of annular steps 21 22 23 of different diameters and arranged at different heights between the open end H of themember 11 and the upper' edge 19 of the outer Wall`18, In these steps 21 22 23 are formed series of circular openings 21', 22, and 23', in which the u per ends of the gas-supply tubes 24, 25, an 26, secured at their lower ends in perforations in the wall of the gas-chamber, are axially positioned.

Gas is supplied. to the gas-chamber 16 through the pipe 27, and air under pressure is delivered to the chamber 17 through the pipe 2S. This air passing through the openings 21', 22, and 23 acts to draw with it gas from the open ends of the respective gassupply tubes, which becomes mixed with the air and when ignited burns freely. When a utensil is located above the burner, as at a, the mixed air and gas ur'ler combustion' passes upward and out from between the utensil a and the upper edge 19 of the burner, thus creating a draft which draws additional air through the openings 13 13 and the open end 14 of the member 11 and over the points of combustion of the several streams of gas issuing honi the tubes 24, 25, and 26, whereby this additional supply of air is raised in temperature before reaching such points of combustion.

By the use of the concave shape of the upper portion of the burner the heat is more closely confined z nd applied to the utensil a, and the points of combustion can be arranged at approximately the correct distance from the arc of the utensils bottom to secure the most complete combustion of the gases and the most cllicient application of the heat.

VVhon a utensil raving a deeper bottom than that shown at (L is used, which is often theI case, the spring 10 is designed to yieldl under the wcig it of said utensi and lts con` tents, thus permitting the downward movement of the utensil until further movement is prevented by the larger diameter of the utensil coming into contact with the opening IOS well of the air-chamber being concave and hevlng e series of annuler steps having epeni ingsI and a Series of gas-delivery pip munieating with the gas-ch lng L -heu' upper ends located amber and h zw- .in said o as and for the purpose described,

In testi111c11y whereof l Mix .my signature 1n presence of two Witnesses.-

BE NJAMIN F; JACKSO N.

VVinesses:

WILLIAM R. REEVE,

H. J. MILLER.

peninge 

